1. To err is human: building a safer health system;Kohn,2000
2. Joint Commission. Sentinel event alert. Lessons learned, wrong site surgery. Issue 6. August 28, 1998. Available from: URL:http://www.jointcommission.org/SentinelEvents/SentinelEventAlert/sea_6.htm. Accessed March 15, 2010.
3. Joint Commission. Sentinel event statistics as of June 2011. Available from: URL:http://www.jointcommission.org/assets/1/18/SE_Stats_Summary_2Q_20111.PDF. Accessed August 29, 2011.
4. The prevalence of wrong level surgery among spine surgeons;Mody;Spine,2008
5. Classification and consequences of errors in otolaryngology;Shah;Laryngoscope,2004